Exterior, Cabin Building Type, Wood Siding Material, Flat RoofLine, Prefab Building Type, and House Building Type Large sliding glass doors allow daylight to fill the living room. Smaller windows are placed in the kitchen area and the sleeping loft. The exterior is clad in heart pine which needs very little up-keep and is known for its strength and hardness.  Photo 16 of 101 in 101 Best Modern Cabins from A Prefab Cabin in Norway